In the past, outdoor installations counted only on the quality of the mortars and the expansion joints to survive the elements. Today, exterior installations have the advantage of incorporating drainage, waterproofing and uncoupling mechanisms that extend their lifetime way beyond their traditional life expectancy. These membranes considerably reduce the stress on the tile assembly by isolation the hard surface from the constant expansions and contractions movements, by draining water infiltration and by waterproofing the substrate. As a result, they contribute to further reduce the efflorescence and bondage failure problems. The membranes behind this simple and ingenious innovation are the Schluter-DITRA-DRAIN, Schluter-KERDI and Schluter-DITRA.
Kerdi and Ditra-Drain system